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30300131 = 231317397
BaseRepresentation
bin111001110010…
…1011111100011
32010000101222002
41303211133203
530224101011
63001234215
7515355401
oct163453743
963011862
1030300131
1116115a34
12a19296b
13637b794
14404a471
1529d7c3b
hex1ce57e3

30300131 has 4 divisors (see below), whose sum is σ = 31617552. Its totient is φ = 28982712.

The previous prime is 30300121. The next prime is 30300143. The reversal of 30300131 is 13100303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13100303 = 19766499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30300131 is a prime.

It is a super-2 number, since 2×303001312 = 1836195877234322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30300121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658676 + ... + 658721.

It is an arithmetic number, because the mean of its divisors is an integer number (7904388).

Almost surely, 230300131 is an apocalyptic number.

30300131 is a deficient number, since it is larger than the sum of its proper divisors (1317421).

30300131 is a wasteful number, since it uses less digits than its factorization.

30300131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317420.

The product of its (nonzero) digits is 27, while the sum is 11.

The square root of 30300131 is about 5504.5554770572. Note that the first 3 decimals coincide. The cubic root of 30300131 is about 311.7560106210.

Adding to 30300131 its reverse (13100303), we get a palindrome (43400434).

The spelling of 30300131 in words is "thirty million, three hundred thousand, one hundred thirty-one".

Divisors: 1 23 1317397 30300131